Notes from documentation perusal:

MISSING IN PROCESS MODEL
* Reference Data write constraints
* Create and delete operations
* Select operations
* SMALL transformation == function (ala Pascal) i.e., transforms data
* Send and receive composition data (SMALL supports creating on the fly)
* Atomicity of process data (SMALL pg. 22) (interrupt supression)

MISSING IN GENERAL
* Attribute default values
* Ordinal branching

MISC
** Can use extra-domain data types
* Wormholes and counterpart objects are used for direct data exchange, but 
  can't identify the objects containing the data. i.e., they
  aren't model references/real shlaer-mellor relationships.
  NOTE: Consult OOA'97

